Table 9 Metabolites correlated to serum insulin C peptide (Pearson’s correlation) for all patients, carbohydrate group, and fasting groups

Metabolite

R All

P All^a

R CH

P CH^a

R F

P F^b

Lactate

0.611

<0.001

0.401

0.047

0.577

<0.001

Pyruvate

0.596

<0.001

0.395

0.051

0.431

0.010

Acetate

-0.513

<0.001

-0.344

0.092

-0.092

0.598

N-acetylgroups

-0.398

0.002

-0.092

0.663

0.397

0.018

Valine

-0.366

0.004

0.189

0.366

0.385

0.023

Acetoacetate

-0.352

0.006

-0.058

0.781

0.348

0.041

Isoleucine

-0.333

0.009

-0.166

0.428

0.488

0.003

Lysine

-0.301

0.020

-0.064

0.763

0.646

<0.001

Propylene Glycol

-0.260

0.045

0.044

0.833

0.305

0.075

Citrate

0.244

0.060

0.262

0.205

0.348

0.041

Leucine

-0.242

0.063

0.125

0.551

0.416

0.013

Glucose

0.233

0.074

0.345

0.092

0.187

0.282

Creatine

-0.209

0.110

-0.444

0.026

0.005

0.978

Phenylalanine

-0.206

0.115

0.357

0.080

0.503

0.002

Methanol

-0.185

0.157

-0.162

0.438

-0.269

0.118

Glycerol

-0.152

0.246

-0.111

0.596

0.323

0.059

Glutamine

-0.152

0.248

0.216

0.300

0.058

0.740

Alanine

0.150

0.252

0.207

0.320

0.303

0.077

Isopropyl alcohol

-0.134

0.307

0.185

0.375

0.222

0.199

Threonine

-0.108

0.409

0.000

1.000

0.462

0.005

3-Hydroxybutyrate

-0.098

0.455

0.153

0.464

0.439

0.008

Creatinine

-0.077

0.557

0.176

0.399

0.158

0.365

Dimethylsulfone

0.076

0.565

0.264

0.202

0.332

0.051

Acetone

0.027

0.835

0.078

0.710

0.530

0.001

Proline

-0.014

0.913

0.154

0.462

0.049

0.778

Asparagine

-0.012

0.927

-0.126

0.547

0.624

<0.001

Glycoproteins

0.012

0.928

0.003

0.989

0.606

<0.001

Methionine

0.010

0.938

0.412

0.041

0.138

0.430